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FX PCT Programming question

I have a small office building that I need to replace an old Honeywell Rapid zone system and the customer wants it done in Johnson.
It is just a VAV Air handler, 2 stages of DX and a hot water coil, Bypass damper for static control. It is set up as a voting system among the VAVs (They don't have reheat) to determine if the Air handler runs in heat or cool.
My question is, is it possible to do this with just PCV VAV controllers and a PCA controller for the Air handler and build the logic in the PCA for the changeover mode, or would I need a JACE to network it all together?
Any input is greatly appreciated

I just did a job like this using a PCG for the AHU's and PCV's for the zones. There were 6 Ahu's with 10 VAV's each. All my voting was done peer to peer so no JACE was needed. The Verasys product is pretty good from what I here but I have never personally worked with it.

I did a custom pressure dependent application for the zones. based on temp and Co2, I set the dampers to heat, cool, or vent. The AHU counts all the requests and makes a decision. I also put in a discharge air permissive that holds the dampers to min position if the air in the duct is not suitable for what the space is requesting.

I think Verasys is the route you should go. I have used the PCT zoning system. Works fine, but I had to customize both times I used it due to my equipment not the same as the programmer designed. (Retrofits) The PCT zoning is not set up to handle a modulating water coil. At first the VERASYS did not do modulating outputs either. The last seminar a couple of months ago indicated they support modulating outputs now.

On both of my custom VVT jobs I was able to use Peer to Peer to standalone the application.

On the first I followed the PCT application very closely. The big modification was modulating heating and cooling coils. I had to adjust the change over timing and voting priorities to get this system to switch back and forth properly. Also the plant does not make both hot and chilled water at the same time. So when heating we have to use ventilation for cooling, and in cooling we just recirculate Return air for heating. The system is easy at outdoor extremes, but near the plant H/C changeover it was difficult to get all the details worked out. DX cooling would have been much easier. It takes a long time for a six row cooling coil to warm up with 74 degree return air.

The second custom job was hard because the system we were tearing out had the "brains" of the zones at the stat not the box. PCT and Verasys both put the brains at the box. So wiring in sheetrock walls and ceilings was not correct for the JCI applications. I used the PCG in the RTU and swapped JCI TEC3000 series for the stats. I had to redo all the peer to peer addressing. Only gotcha was the demand I read from the TEC did not increase when Stat was in opposite mode. So if the RTU was heating, stats locked in heating output only, cooling demand stayed at zero no matter how warm the zone got. I could have fixed this in the RTU using PCT so the RTU would calculate the demand, but it was easier at that point to put the demand calculation in the JACE.

Well said Dave CR! I'm going to use that one! I am not too much of a fan of the QA apps unless they are exact to what I need. Then they are just OK

OP- if you are not very familiar with PCT programming i would look into Verasys. I have not used Verasys as i like to be able to get into the programs and have heard mixed things but it's worth looking at i hear.